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12. Sensitivity Results and Summary

Four days later you receive Junior’s culture and susceptibility results:

 

When you receive Junior’s culture and susceptibility results, you are a little surprised but not shocked. MRSA seems to be recognized more and more in animals (as well as humans). You are glad that you sent home the MRSA information sheet with Junior’s owner at his last appointment and hope that they have been following the guidelines it contains. You realize that you will have to spend more time discussing this situation with Joyce in order to dispel possible fears she may have due to her aunt’s recent infection.


You plan to discuss MRSA with Joyce when you next speak to her, and you do a little research to refresh your knowledge about MRSA. You find that Staphylococcus aureus infections, including MRSA, include superficial skin and ear infections as well as more serious infections such as surgical wound infections, bloodstream infections, pneumonia, osteomyelitis and endocarditis. Established risk factors for MRSA infections in humans include current or recent hospitalization or surgery, residence in a long-term care facility, dialysis, and indwelling percutaneous medical devices and catheters. Symptomatic and asymptomatic MRSA in pet animals has also been documented, so you realize that you need to educate your client about potential risks, precautions, and hand hygiene. You plan to reiterate the prevention points in the MRSA handout to Joyce when you call her and emphasize the importance of continued follow up appointments. Link to MRSA handout


Before you call Joyce, however, you must decide what antibiotic therapy you want to use to treat Junior’s resistant pyoderma.

 

Based upon the C&S results, what antibiotic do you want to continue Junior on? Select an appropriate answer for each antibiotic listed below:

 

 

 

 

 

 

 

Lessons learned when treating a bacterial skin infection:

• You need to choose the appropriate antibiotic and use the correct dose regimen.

• You should treat for the appropriate period of time and recheck!

• Bacteria may be resistant – you should consider performing culture and susceptibility testing sooner rather than later.

• Client communication and education is crucial to obtain compliance and treatment success.

• The symptoms may be ongoing if the underlying causes are not identified and pursued.

 

 

Written by: Jamie Umber DVM, Sheila Torres DVM, PhD, and Jeff Bender DVM, MS

 

 

 

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